xfinterstack(1) General Commands Manual xfinterstack(1)
NAME
xfinterstack - transform a model to match model built on other stack
SYNOPSIS
xfinterstack
DESCRIPTION
This program will transform a model that has been built on one data
stack so that it will match the coordinates of a different data stack
that has some sections overlapping the first stack.
To use it, you must first build a model file in which each object has
two points: the first point placed on a point in the first data stack,
the second point placed on the exactly corresponding point on the same
section in the second data stack. This does not require very many
objects - 10 should be plenty.
Entries to the program are:
Name of the model file containing the objects with corresponding points
on an overlapping section.
The Z value (typically the section #) for the points on the section in
the first data stack. Only model objects whose first point has this Z
value will be included
1 for a full report of deviations of points from perfect correspondence
(see below)
(After the program solves for a transformation):
Name of the model file to be transformed
0 to transform model from fitting the first stack to fitting the second
stack, or 1 to transform it from fitting the second stack to fitting
the first stack.
If the second point in each correspondence object has a different Z
value from the first point (i.e. if the two data stacks do not have
congruent Z coordinates), then the Z values of all points in the model
being transformed will be adjusted by the difference in Z's of the cor-
respondence points.
When the program solves for the transformation between a pair of sec-
tions, it applies the transformation to the points on the second sec-
tion of the pair, and computes the displacement, or deviation, between
each point and the corresponding point on the first section of the
pair. It then reports the mean deviation for all of the points, the
maximum deviation, and the object number of the point with maximum
deviation. In addition, you may elect to have a complete report of the
deviations of all points for particularly bad sections. If you choose
this option, you control which sections are reported by specifying cri-
terion values for the mean and maximum deviations; the full report will
be made for any sections with mean or maximum deviations greater than
the respective criteria.
HISTORY
Written by David Mastronarde, 1/4/90
BUGS
Email bug reports to mast at colorado dot edu.
IMOD 4.10.12 xfinterstack(1)